Pump casing



FIG. 1 is a perspective view from the drive side of the pump casing design of the present invention;

FIG. 2 is a plan view of the pump casing looking into the drive side opening of the pump casing;

FIG. 3 is a view in elevation of the pump casing with the drive side of the pump casing being oriented upwardly;

FIG. 4 is a perspective view of the pump casing as seen from the suction side of the pump casing; and,

FIG. 5 is a plan view of the pump casing as viewed looking into the suction side of the pump casing. 

The ornamental design for the pump casing, as shown and described herein. 